AAF Training Film TF 1-505 Acrobatics, 1943.
"Describes the fundamental techniques and common errors in such maneuvers as simple loop, half roll, reverse, Immelmann, snap roll, slow roll, and vertical reverse." (U.S. Government Films For Public Educational Use, 1955)
Description at the National Archives: "This film presents a straightforward how-to guide for instruction in some of the basic aerobatic moves: loops, rolls, spins, etc." National Archives Identifier: 6050353
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